ely beach



A.E. BEACH. PNEUMATIG TUBE. No. 64,400. Patented May '7, 1867.

@gleiten tstes lstent @ffice A. ELY BEACH, OF STRATFORD, CONNECTICUT.Letters Patent No. 64,400, datedMay?, 1867.

IMPROVEMENT IN PNEUMATIG TUBES.

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TO ADL WHOM IT MAY CON CERN:

Be it known Athat I, A. ELY BEACH, of Stratford, in the county ofFairfield, and State of Connecticut, have invented a new and usefulIImprovement in Valves for Pneumatic Tubesland other purposes; and I dohereby declare that the following is a full, clear, f'nd exactdescription thereof, which will enable those skilled in the art to makeand use th'e same, reference being had to the accompanying drawings',forming part of this specication, in whi'chi i 4Figure 1 is aperspective view, in partisectional, of my improvement, showing thevalve closed and about to be opened by an approaching car Figure 2 is laside sectional elevation of my improvement, showing the valve opened anda car inthe act of passing the valve".-

hfiguxeis'a front or end elevation of my improvement, in part sectional,showing the valve closed.

Figure'is a, horizontal sectional plan view of a modification ofvmyimprovement, showing the method ofv cmploying'divi'ded valves.

Similar letters o f reference inthe several figures indicate Lne sameparts.

. The nature of my invention consists in the employment'of apneumati'/l've so' constructed as to be operated'by the car on itsapproach near to 4the valve, substantially as hereinafter described.

A, gs. 1, 2, 3, is the pneumatic wall or tube, to be of the form shown,or any other desired kform, and B isv the pneumatic valve, in thisexample of `rectangularshape, moving vertically in theJv tube A, guidedby, grooves inthe side ofthc'tube and by astu'fng-box, C, rising abovethe tube, as shown.' E are levers jointed together at a, their oppositeends pivoted respectively at b at the end of 'a recess, c, inthe roof ofthe tube, and at d te the valve Aat the upper end of a recess, e. in theface of the-valve, which recess e receives the Vlevers E, whilethe-recess c receives th'e levers D when thevalv'e opens.' F'isthepneumatic car supposed to be movingin the direction of the arrow. vIntig. 1 the valve B .is represented as closed, and the advancing car F,by-,contact with lever D, forces' it up and opens the valve B, allowingthe car to pass. the valve, and when vthe car has passed the valve fallsby gravity. The valve may have levers D 'E and thciradjuncts arrangedupon both sides of the valve, in which case the valve will bev operatedby the car inwhichever directipn it moves; A modification of thearrangement of the lever,.against.whichfthe car strikes in raising thevalve,`is indicated by D in lig. 2. In this gure the rocfvof the tube israised-into. the form o fva. hood, A', forming a recess, c', whichaccommodates the movement. of the"- leve'r D1, having its pivot at b..,When this modification of my improvementis used, the rise of the valvewill be morel gradual: than. when the arrangement of the lever D, shownin igfl, is employed. The position' of the valve andflevers, when thevalve is open, and the car in the act of passing the valve, is showninfig. 2. Instead of two jointed levers n single lever may be employed,when desired, to operate the valve, as yindicated by D2 in iig/T2. Oneend of this lever is pivoted to or above the roof of the car; theothercnd of lever D extends under the bottom of the valve B. The leverD2 occupies an inclined position, so that when the car advances, asbefore described, the lever D2 is raised, by contact with `the car, toahorizontal position, and carries up the valve, which closes bygravity'after the car has passed.

Fig. 4 illustrates -a modification of my improvement in'which the valveis divided into two parts, B1 B2, with levers D E and their adjunctsoperating substantially as 'before described. When this arrangement isemployed the car passes between-and in contact with'two levers D,pushing them and their attached Valves aside, thus simultaneouslyopening the two valves Bl B2. In this example the valves Bl B2 movehorizontally and are closed by springs f, which press in the valves, asshown. Whenever any of the valves are arranged in such position as notreadily to close by gravity, they may be made to close by springs orweights. In some casesthe levers D E may be made in one piece in theform of springs, as shown in red at z, iig. 4. In order to reduce thefriction of the valves rollers g, shown in red, iig. 4, or equivalentdevices, may be employed.-

I do not limit or coniine'myself to the exact forni or construct-ion ofany of the parts herein shown, as the mechanic skilled in the art will-know how, withoutdepartng from my invention, 'to carry it outpractically in a variety of forms.

What I claim, and desire to secure by Letters Patent, is

The employment, in combination with pneumatic walls or tubes, ofautomatic valves operating substantially as herein shown and described.

A. ELY BEACH. Witnesses:

WM. F. McNAMAnA,

J. A. Srnvxcs.

